diff --git a/.github/appveyor.yml b/.github/appveyor.yml
index d8bfb9a..04566ea 100644
--- a/.github/appveyor.yml
+++ b/.github/appveyor.yml
@@ -8,7 +8,7 @@
 build_script:
 - cmd: PCbuild\build.bat -e
 test_script:
-- cmd: PCbuild\rt.bat -q -uall -rwW --slowest --timeout=1200 -j0
+- cmd: PCbuild\rt.bat -q -uall -u-cpu -rwW --slowest --timeout=1200 -j0
 
 # Only trigger AppVeyor if actual code or its configuration changes
 only_commits: